Can't Understand DNS Entries

It seems that recently Cloudflare has added a couple of new CNAME type entries in the DNS section that includes cdn and cdn-0 to cdn-7 for my site URL address.

It additionally includes _domainconnect as CNAME.
Screenshot Screenshot by Lightshot

These changes are made very recently because didn’t see them a couple of days before. Or may be I didn’t notice them earlier.

What are these actually doing? Are these okay or should I remove them?

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